1
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Nandwana NK, Patel OPS, Mehra MK, Kumar A, Salvino JM. Recent Advances in Metal-Catalyzed Approaches for the Synthesis of Quinazoline Derivatives. Molecules 2024; 29:2353. [PMID: 38792215 PMCID: PMC11124210 DOI: 10.3390/molecules29102353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/04/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Quinazolines are an important class of heterocyclic compounds that have proven their significance, especially in the field of organic synthesis and medicinal chemistry because of their wide range of biological and pharmacological properties. Thus, numerous synthetic methods have been developed for the synthesis of quinazolines and their derivatives. This review article briefly outlines the new synthetic methods for compounds containing the quinazoline scaffold employing transition metal-catalyzed reactions.
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Affiliation(s)
- Nitesh K. Nandwana
- Medicinal Chemistry and Molecular and Cellular Oncogenesis (MCO) Program, The Wistar Institute, Philadelphia, PA 19104, USA
| | - Om P. S. Patel
- Department of Technical Education, Government Polytechnic Naraini, Banda 210001, India
| | - Manish K. Mehra
- Medicinal Chemistry and Molecular and Cellular Oncogenesis (MCO) Program, The Wistar Institute, Philadelphia, PA 19104, USA
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031, India
| | - Joseph M. Salvino
- Medicinal Chemistry and Molecular and Cellular Oncogenesis (MCO) Program, The Wistar Institute, Philadelphia, PA 19104, USA
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2
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Paulus F, Stein C, Heusel C, Stoffels TJ, Daniliuc CG, Glorius F. Three-Component Photochemical 1,2,5-Trifunctionalizations of Alkenes toward Densely Functionalized Lynchpins. J Am Chem Soc 2023; 145:23814-23823. [PMID: 37852246 DOI: 10.1021/jacs.3c08898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Radical remote 1,n-difunctionalization reactions (n > 2) of alkenes are powerful tools to efficiently introduce functional groups with selected distances into target molecules. Among these reactions, 1,5-difunctionalizations are an important subclass, leading to sought-after scaffolds, but typically suffer from tailored starting materials and strict limitations for the formed functional group in 2-position. Seeking to address these issues and to make radical 1,5-difunctionalizations of alkenes more applicable, we report a novel three-component 1,2,5-trifunctionalization reaction between imine-based bifunctional reagents and two distinct alkenes, driven by visible light energy transfer-catalysis. Key to achieving this selective one-step installation of three different functional groups via the choreographed formation of four bonds was the utilization of a 1,2-boron shift and the rigorous capitalization of radical polarities and stabilities. Thorough mechanistic studies were carried out, and the synthetic utility of the obtained products was demonstrated by various downstream modifications. Notably, in addition to the functionalization of individual functional groups, their interplay gave rise to a unique array of cyclic products.
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Affiliation(s)
- Fritz Paulus
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Colin Stein
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Corinna Heusel
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Tobias J Stoffels
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149 Münster, Germany
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3
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Moon HW, Lavagnino MN, Lim S, Palkowitz MD, Mandler MD, Beutner GL, Drance MJ, Lipshultz JM, Scola PM, Radosevich AT. Deoxyfluorination of 1°, 2°, and 3° Alcohols by Nonbasic O-H Activation and Lewis Acid-Catalyzed Fluoride Shuttling. J Am Chem Soc 2023; 145:22735-22744. [PMID: 37812176 DOI: 10.1021/jacs.3c08373] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
A method for deoxyfluorination of aliphatic primary, secondary, and tertiary alcohols is reported, employing a nontrigonal phosphorus triamide for base-free alcohol activation in conjunction with an organic soluble fluoride donor and a triarylborane fluoride shuttling catalyst. Mechanistic experiments are consistent with a reaction that proceeds by the collapse of an oxyphosphonium fluoroborate ion pair with fluoride transfer. The substrate scope complements existing deoxyfluorination methods and enables the preparation of homochiral secondary and tertiary alkylfluorides by stereoinversion of the substrate alcohol.
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Affiliation(s)
- Hye Won Moon
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Marissa N Lavagnino
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Soohyun Lim
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Maximilian D Palkowitz
- Small Molecule Drug Discovery, Bristol Myers Squibb, 250 Water Street, Cambridge, Massachusetts 02141, United States
| | - Michael D Mandler
- Small Molecule Drug Discovery, Bristol Myers Squibb, Princeton, New Jersey 08543, United States
| | - Gregory L Beutner
- Chemical and Synthetic Development, Bristol Myers Squibb, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Myles J Drance
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jeffrey M Lipshultz
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Paul M Scola
- Small Molecule Drug Discovery, Bristol Myers Squibb, 250 Water Street, Cambridge, Massachusetts 02141, United States
| | - Alexander T Radosevich
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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4
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Zong Y, Zou X, Song J, Chen GQ, Zhang X. Chemoselective and Divergent Synthesis of Chlorohydrins and Oxaheterocycles via Ir-Catalyzed Asymmetric Hydrogenation. Org Lett 2023; 25:6875-6880. [PMID: 37697226 DOI: 10.1021/acs.orglett.3c02565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Chlorohydrins and oxaheterocycles are synthetically valuable building blocks for diverse natural products and therapeutic substances. A highly efficient Ir/f-phamidol-catalyzed asymmetric hydrogenation of ω-chloroketones was successfully developed, and various chlorohydrins and oxaheterocycles were obtained divergently with excellent yields and enantioselectivities (up to >99% yield and >99% ee). Synthetic utilities of this divergent transformation were demonstrated by gram-scale synthesis of key intermediates of several enantiomerically enriched drugs via this catalytic methodology.
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Affiliation(s)
- Yan Zong
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, and Medi-Pingshan, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
| | - Xiaomei Zou
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, and Medi-Pingshan, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
| | - Jingyuan Song
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, and Medi-Pingshan, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
| | - Gen-Qiang Chen
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, and Medi-Pingshan, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
| | - Xumu Zhang
- Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, and Medi-Pingshan, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
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5
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Sunbal, Alamzeb M, Omer M, Abid OUR, Ullah M, Sohail M, Ullah I. Chemical insights into the synthetic chemistry of five-membered saturated heterocycles-a transition metal-catalyzed approach. Front Chem 2023; 11:1185669. [PMID: 37564110 PMCID: PMC10411457 DOI: 10.3389/fchem.2023.1185669] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/05/2023] [Indexed: 08/12/2023] Open
Abstract
Drug design and delivery is primarily based on the hunt for new potent drug candidates and novel synthetic techniques. Recently, saturated heterocycles have gained enormous attention in medicinal chemistry as evidenced by the medicinal drugs listed in the FDA Orange Book. Therefore, the demand for novel saturated heterocyclic syntheses has increased tremendously. Transition metal (TM)-catalyzed reactions have remained the prime priority in heterocyclic syntheses for the last three decades. Nowadays, TM catalysis is well adorned by combining it with other techniques such as bio- and/or enzyme-catalyzed reactions, organocatalysis, or using two different metals in a single catalysis. This review highlights the recent developments of the transition metal-catalyzed synthesis of five-membered saturated heterocycles.
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Affiliation(s)
- Sunbal
- Institute of Chemical Sciences, University of Swat, Swat, Pakistan
| | | | - Muhammad Omer
- Institute of Chemical Sciences, University of Swat, Swat, Pakistan
| | | | - Mohib Ullah
- Department of Chemistry, Balochistan University of Information Technology Engineering and Management Sciences (BUITEMS), Quetta, Pakistan
| | - Muhammad Sohail
- Institute of Chemical Sciences, University of Swat, Swat, Pakistan
| | - Ihsan Ullah
- Institute of Chemical Sciences, University of Swat, Swat, Pakistan
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6
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Yang J, Wu YD, Pu M. Direct Amination of α-Triaryl Alcohols via Vanadium Catalysis. J Org Chem 2023. [PMID: 37220167 DOI: 10.1021/acs.joc.3c00414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
α-Triaryl amines have been used as pharmaceuticals and pharmaceutical intermediates for antifungal and anticancer applications. Current methods to synthesize such compounds require at least two steps, and no direct amination of tertiary alcohols has been reported. Herein, we disclose efficient catalytic conditions for the direct amination of α-triaryl alcohols to access α-triaryl amines. VO(OiPr)3, a commercially available reagent, has been identified as an effective catalyst for the direct amination of several α-triaryl alcohols. This process is scalable, as demonstrated by a gram-scale synthesis, and the reaction still works at as low as a 0.01 mol % catalyst loading with the turnover number reaching 3900. Moreover, commercial pharmaceuticals including clotrimazole and flutrimazole have been successfully prepared rapidly and efficiently using this newly developed method.
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Affiliation(s)
- Jinglei Yang
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518055, China
| | - Yun-Dong Wu
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Shenzhen Bay Laboratory, Shenzhen 518055, China
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Maoping Pu
- Shenzhen Bay Laboratory, Shenzhen 518055, China
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7
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De S, Chowdhury C. Iron(III)-Catalyzed Carboannulations of Homopropargylic Alcohols: A One-Pot General Synthesis of 4-(2,2-Diarylvinyl)quinolines and 4-(2,2-Diarylvinyl)-2 H-chromenes. J Org Chem 2023. [PMID: 37178188 DOI: 10.1021/acs.joc.3c00442] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A simple and efficient approach for the general synthesis of 4-(2,2-diarylvinyl)quinolines 5 and 4-(2,2-diarylvinyl)-2H-chromenes 6 has been developed using Fe(III)-catalyzed intramolecular annulations of homopropargyl substrates 1 and 2, respectively. The high yields (up to 98%) achieved using simple substrates, an environmentally benign low-cost catalyst, and less hazardous reaction conditions make the methodology inherently attractive.
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Affiliation(s)
- Sukanya De
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Kolkata 700032, India
| | - Chinmay Chowdhury
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Kolkata 700032, India
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8
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Tamatam R, Kim SH, Shin D. Transition-metal-catalyzed synthesis of quinazolines: A review. Front Chem 2023; 11:1140562. [PMID: 37007059 PMCID: PMC10060649 DOI: 10.3389/fchem.2023.1140562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
Quinazolines are a class of nitrogen-containing heterocyclic compounds with broad-spectrum of pharmacological activities. Transition-metal-catalyzed reactions have emerged as reliable and indispensable tools for the synthesis of pharmaceuticals. These reactions provide new entries into pharmaceutical ingredients of continuously increasing complexity, and catalysis with these metals has streamlined the synthesis of several marketed drugs. The last few decades have witnessed a tremendous outburst of transition-metal-catalyzed reactions for the construction of quinazoline scaffolds. In this review, the progress achieved in the synthesis of quinazolines under transition metal-catalyzed conditions are summarized and reports from 2010 to date are covered. This is presented along with the mechanistic insights of each representative methodology. The advantages, limitations, and future perspectives of synthesis of quinazolines through such reactions are also discussed.
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Affiliation(s)
- Rekha Tamatam
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
- Gachon Pharmaceutical Research Institute, Gachon University, Incheon, Republic of Korea
| | - Seok-Ho Kim
- College of Pharmacy, Kangwon National University, Chuncheon, Gangwon-do, Republic of Korea
- *Correspondence: Seok-Ho Kim, ; Dongyun Shin,
| | - Dongyun Shin
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
- Gachon Pharmaceutical Research Institute, Gachon University, Incheon, Republic of Korea
- *Correspondence: Seok-Ho Kim, ; Dongyun Shin,
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9
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Akkarasamiyo S, Sakonnakhon HPN, Kuntiyong P, Ploypradith P, Samec JSM. Concise Synthesis of 1,4-Dideoxy-1,4-imino-l-arabinitol (LAB) from d-Xylose by Intramolecular Stereospecific Substitution of a Hydroxy Group. Synlett 2023. [DOI: 10.1055/s-0041-1738432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
AbstractWe report a concise and green total synthesis of 1,4-dideoxy-1,4-imino-l-arabinitol hydrochloride from naturally occurring d-xylose. The key step involves a stereospecific substitution of a hydroxy group, without prior derivatization, in which the only byproduct is water. This opens up a novel benign route to iminosugar derivatives with diverse biological activities.
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Affiliation(s)
- Sunisa Akkarasamiyo
- Department of Chemistry, Special Research Unit for Advanced Magnetic Resonance (AMR), Faculty of Science, Kasetsart University
| | | | - Punlop Kuntiyong
- Department of Chemistry, Faculty of Science, Silpakorn University, Sanamchandra Palace Campus
| | - Poonsakdi Ploypradith
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute
- Program in Chemical Biology, Chulabhorn Graduate Institute, Chulabhorn Royal Academy
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10
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Yang S, Li Y, Chen L, Wang H, Shang L, He P, Dong H, Wang G, Ding G. Fabrication of Carbon-Based Quantum Dots via a "Bottom-Up" Approach: Topology, Chirality, and Free Radical Processes in "Building Blocks". SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2205957. [PMID: 36610043 DOI: 10.1002/smll.202205957] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/28/2022] [Indexed: 06/17/2023]
Abstract
The discovery of carbon-based quantum dots (CQDs) has allowed opportunities for fluorescence bioimaging, tumor diagnosis and treatment, and photo-/electro-catalysis. Nevertheless, in the existing reviews related to the "bottom-up" approaches, attention is mainly paid to the applications of CQDs but not the formation mechanism of CQDs, which mainly derived from the high complexities during the synthesis of CQDs. Among the various synthetic methods, using small molecules as "building blocks", the development of a "bottom-up" approach has promoted the structural design, modulation of the photoluminescence properties, and control of the interfacial properties of CQDs. On the other hand, many works have demonstrated the "building blocks"-dependent properties of CQDs. In this review, from one of the most important variables, the relationships among intrinsic properties of "building blocks" and photoluminescence properties of CQDs are summarized. The topology, chirality, and free radical process are selected as descriptors for the intrinsic properties of "building blocks". This review focuses on the induction and summary of recent research results from the "bottom-up" process. Moreover, several empirical rules pertaining thereto are also proposed.
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Affiliation(s)
- Siwei Yang
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yongqiang Li
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Liangfeng Chen
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hang Wang
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Liuyang Shang
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Peng He
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Dong
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Gang Wang
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, P. R. China
| | - Guqiao Ding
- Joint Laboratory of Graphene Materials and Applications, State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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11
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Demidoff FC, Caleffi GS, Figueiredo M, Costa PRR. Ru(II)-Catalyzed Asymmetric Transfer Hydrogenation of Chalcones in Water: Application to the Enantioselective Synthesis of Flavans BW683C and Tephrowatsin E. J Org Chem 2022; 87:14208-14222. [PMID: 36251770 DOI: 10.1021/acs.joc.2c01733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The oxo-tethered-Ru(II) precatalyst promoted the one-pot C═C/C═O reduction of chalcones using sodium formate as the hydrogen source in water through asymmetric transfer hydrogenation. Twenty-seven 1,3-diarylpropan-1-ols were obtained in good to excellent yields (up to 96%) and enantiomeric purities (up to 98:2). Our data suggested that the enones are first reduced to the corresponding dihydrochalcones (1,4-selectivity) and then into 1,3-diarylpropan-1-ols (C═O reduction). The stereoelectronic effects of electron-donating and electron-withdrawing groups at the ortho, meta and para positions of both aromatic rings were evaluated. The 2-OH group at the B ring was well tolerated, allowing a straightforward enantioselective synthesis of two flavans through the Mitsunobu cyclization, the antiviral (S)-BW683C and the natural flavan (S)-tephrowatsin E.
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Affiliation(s)
- Felipe C Demidoff
- Laboratório de Química Bioorgânica (LQB), Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Bloco H, Cidade Universitária, 21.941-902 Rio de Janeiro, Brasil
| | - Guilherme S Caleffi
- Laboratório de Química Bioorgânica (LQB), Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Bloco H, Cidade Universitária, 21.941-902 Rio de Janeiro, Brasil
| | - Marcella Figueiredo
- Laboratório de Química Bioorgânica (LQB), Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Bloco H, Cidade Universitária, 21.941-902 Rio de Janeiro, Brasil
| | - Paulo R R Costa
- Laboratório de Química Bioorgânica (LQB), Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Bloco H, Cidade Universitária, 21.941-902 Rio de Janeiro, Brasil
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12
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Ge L, Zhang C, Pan C, Wang DX, Liu DY, Li ZQ, Shen P, Tian L, Feng C. Photoredox-catalyzed C-C bond cleavage of cyclopropanes for the formation of C(sp 3)-heteroatom bonds. Nat Commun 2022; 13:5938. [PMID: 36209214 PMCID: PMC9547854 DOI: 10.1038/s41467-022-33602-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 09/26/2022] [Indexed: 11/09/2022] Open
Abstract
Sterically congested C-O and C-N bonds are ubiquitous in natural products, pharmaceuticals, and bioactive compounds. However, the development of a general method for the efficient construction of those sterically demanding covalent bonds still remains a formidable challenge. Herein, a photoredox-driven ring-opening C(sp3)-heteroatom bond formation of arylcyclopropanes is presented, which enables the construction of structurally diversified while sterically congested dialkyl ether, alkyl ester, alcohol, amine, chloride/fluoride, azide and also thiocyanate derivatives. The selective single electron oxidation of aryl motif associated with the thermodynamic driving force from ring strain-release is the key for this transformation. By this synergistic activation mode, C-C bond cleavage of otherwise inert cyclopropane framework is successfully unlocked. Further mechanistic and computational studies disclose a complete stereoinversion upon nucleophilic attack, thus proving a concerted SN2-type ring-opening functionalization manifold, while the regioselectivity is subjected to an orbital control scenario.
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Affiliation(s)
- Liang Ge
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Chi Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Chengkai Pan
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Ding-Xing Wang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Dong-Ying Liu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Zhi-Qiang Li
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Pingkang Shen
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Lifang Tian
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China.
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13
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Chen X, Marek I. Stereoinvertive Nucleophilic Substitution at Quaternary Carbon Stereocenters of Cyclopropyl Ketones and Ethers. Angew Chem Int Ed Engl 2022; 61:e202203673. [PMID: 35471589 PMCID: PMC9324837 DOI: 10.1002/anie.202203673] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/09/2022]
Abstract
A highly regio‐ and diastereoselective nucleophilic substitution at the quaternary carbon stereocenter of cyclopropyl ketones and cyclopropyl carbinol derivatives using TMSBr, DMPSCl and TMSN3 as nucleophiles has been developed. A variety of acyclic tertiary alkyl bromides, chlorides and azides were therefore prepared with excellent diastereopurity. The substitution occurs at the most substituted quaternary carbon center in a stereoinvertive manner, which may be attributed to the existence of a bicyclobutonium species.
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Affiliation(s)
- Xu Chen
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa, 3200009, Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Technion City, Haifa, 3200009, Israel
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14
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Liu B, Wang G, Xu Z, Wang M, Nie Y, Luo Z. Ionic liquid/boronic acid system enabled deuteration with D2O. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Chen X, Marek I. Stereoinvertive Nucleophilic Substitution at Quaternary Carbon Stereocenters of Cyclopropyl Ketones and Ethers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xu Chen
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200009 Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200009 Israel
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16
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Duari S, Biswas S, Roy A, Maity S, Mishra AK, Souza AR, Elsharif AM, Morgon NH, Biswas S. Regioselective N‐Functionalization of Tautomerizable Heterocycles through Methyl Trifluoromethanesulfonate‐Catalyzed Substitution of Alcohols and Alkyl Group Migrations. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Surajit Duari
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
| | - Subrata Biswas
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
| | - Arnab Roy
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
| | - Srabani Maity
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
| | - Abhishek Kumar Mishra
- Department of Medicinal and Process Chemistry CSIR-Central Drug Research Institute Lucknow 226031 U. P. India
| | - Aguinaldo R. Souza
- Department of Chemistry, School of Science São Paulo State University Bauru São Paulo Brazil 17033-360
| | - Asma M. Elsharif
- Department of Chemistry Imam Abdulrahman Bin Faisal University, P.O. Box 1982 Dammam 31441 Saudi Arabia
| | - Nelson H. Morgon
- Department of Physical Chemistry, Institute of Chemistry Campinas State University Campinas São Paulo Brazil 13083-970
| | - Srijit Biswas
- Department of Chemistry University of Calcutta 92, A. P. C. Road Kolkata 700 009 West Bengal India
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17
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Zheng Y, Fang X, Deng WH, Zhao B, Liao RZ, Xie Y. Direct activation of alcohols via perrhenate ester formation for an intramolecular dehydrative Friedel–Crafts reaction. Org Chem Front 2022. [DOI: 10.1039/d2qo00229a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general and highly efficient intramolecular dehydrative Friedel–Crafts reactions via Re2O7 mediated hydroxyl group activation is described for the syntheses of tetrahydronaphthalene, tetrahydroquinoline, tetrahydroisoquinoline, chromane, and isochromane derivatives.
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Affiliation(s)
- Yuzhu Zheng
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xiong Fang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Wen-Hao Deng
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Bin Zhao
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Youwei Xie
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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18
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Xu B, Lin Y, Ye Y, Xu L, Xie T, Ye XY. Benzyl thioether formation merging copper catalysis. RSC Adv 2021; 12:692-697. [PMID: 35425124 PMCID: PMC8697992 DOI: 10.1039/d1ra08015f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/20/2021] [Indexed: 11/26/2022] Open
Abstract
A novel copper-catalyzed thioetherification reaction has been developed to afford benzyl thioethers in moderate to excellent yields. Under the mild and easy-to-operate conditions, a variety of thioethers are efficiently prepared from readily available benzyl alcohols (primary, secondary, and tertiary) and thiols in the presence of Cu(OTf)2 as the Lewis acid catalysis. This C-S bond formation protocol furnishes exceptional chemoselectivity, and the preliminary mechanism studies show that the reaction should proceed through a Lewis-acid-mediated SN1-type nucleophilic attack of the carbocations formed in situ.
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Affiliation(s)
- Bing Xu
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Ying Lin
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Yang Ye
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Li Xu
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
| | - Xiang-Yang Ye
- School of Pharmacy, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University Hangzhou Zhejiang 311121 PR China
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19
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Panda S, Poudel TN, Hegde P, Aldrich CC. Innovative Strategies for the Construction of Diverse 1'-Modified C-Nucleoside Derivatives. J Org Chem 2021; 86:16625-16640. [PMID: 34756029 DOI: 10.1021/acs.joc.1c01920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Modified C-nucleosides have proven to be enormously successful as chemical probes to understand fundamental biological processes and as small-molecule drugs for cancer and infectious diseases. Historically, the modification of the glycosyl unit has focused on the 2'-, 3'-, and 4'-positions as well as the ribofuranosyl ring oxygen. By contrast, the 1'-position has rarely been studied due to the labile nature of the anomeric position. However, the improved chemical stability of C-nucleosides allows the modification of the 1'-position with substituents not found in conventional N-nucleosides. Herein, we disclose new chemistry for the installation of diverse substituents at the 1'-position of C-nucleosides, including alkyl, alkenyl, difluoromethyl, and fluoromethyl substituents, using the 4-amino-7-(1'-hydroxy-d-ribofuranosyl)pyrrolo[2,1-f][1,2,4]triazine scaffold as a representative purine nucleoside mimetic.
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Affiliation(s)
- Subhankar Panda
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Tej Narayan Poudel
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Pooja Hegde
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Courtney C Aldrich
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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20
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Zhang X, Tan CH. Stereospecific and stereoconvergent nucleophilic substitution reactions at tertiary carbon centers. Chem 2021. [DOI: 10.1016/j.chempr.2020.11.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Organophotocatalytic selective deuterodehalogenation of aryl or alkyl chlorides. Nat Commun 2021; 12:2894. [PMID: 34001911 PMCID: PMC8129137 DOI: 10.1038/s41467-021-23255-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/30/2021] [Indexed: 12/23/2022] Open
Abstract
Development of practical deuteration reactions is highly valuable for organic synthesis, analytic chemistry and pharmaceutic chemistry. Deuterodehalogenation of organic chlorides tends to be an attractive strategy but remains a challenging task. We here develop a photocatalytic system consisting of an aryl-amine photocatalyst and a disulfide co-catalyst in the presence of sodium formate as an electron and hydrogen donor. Accordingly, many aryl chlorides, alkyl chlorides, and other halides are converted to deuterated products at room temperature in air (>90 examples, up to 99% D-incorporation). The mechanistic studies reveal that the aryl amine serves as reducing photoredox catalyst to initiate cleavage of the C-Cl bond, at the same time as energy transfer catalyst to induce homolysis of the disulfide for consequent deuterium transfer process. This economic and environmentally-friendly method can be used for site-selective D-labeling of a number of bioactive molecules and direct H/D exchange of some drug molecules. Deuterodehalogenation of organic chlorides is a useful strategy to install deuterium atoms at specific positions, however, it has several drawbacks. In this study, the authors report an organophotocatalytic system consisting of an aryl-amine-based photocatalyst and a common disulfide co-catalyst, for efficient deuteration of a wide range of aryl chlorides, alkyl chlorides and other halides, at room temperature in air.
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22
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Wang H, Zhao Y, Zhang F, Ke Z, Han B, Xiang J, Wang Z, Liu Z. Hydrogen-bond donor and acceptor cooperative catalysis strategy for cyclic dehydration of diols to access O-heterocycles. SCIENCE ADVANCES 2021; 7:7/22/eabg0396. [PMID: 34039607 PMCID: PMC8153714 DOI: 10.1126/sciadv.abg0396] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
Dehydrative cyclization of diols to O-heterocycles is attractive, but acid and/or metal-based catalysts are generally required. Here, we present a hydrogen-bond donor and acceptor cooperative catalysis strategy for the synthesis of O-heterocycles from diols in ionic liquids [ILs; e.g., 1-hydroxyethyl-3-methyl imidazolium trifluoromethanesulfonate ([HO-EtMIm][OTf])] under metal-free, acid-free, and mild conditions. [HO-EtMIm][OTf] is tolerant to a wide diol scope, shows performance even better than H2SO4, and affords a series of O-heterocycles including tetrahydrofurans, tetrahydropyrans, morpholines, dioxanes, and thioxane in high yields. Mechanism investigation indicates that the IL cation and anion serve as hydrogen-bond donor and acceptor, respectively, to activate the C─O and O─H bonds of alcohol via hydrogen bonds, which synergistically catalyze dehydrative cyclization of diols to O-heterocycles. Notably, the products could be spontaneously separated after reaction because of their immiscibility with the IL, and the IL could be recycled. This green strategy has great potential for application in industry.
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Affiliation(s)
- Huan Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yanfei Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fengtao Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhengang Ke
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Physical Science Laboratory, Huairou National Comprehensive Science Center, Beijing 101400, P. R. China
| | - Junfeng Xiang
- Center for Physicochemical Analysis and Measurement, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Zhenpeng Wang
- Center for Physicochemical Analysis and Measurement, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Zhimin Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. China.
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Physical Science Laboratory, Huairou National Comprehensive Science Center, Beijing 101400, P. R. China
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23
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Samikannu R, Sethuraman S, Akula N, Radhakrishnan V, Kamisetti S, Banu S, Vetrichelvan M, Gupta A, Li J, Rampulla R, Mathur A. Solvent-specific, DAST-mediated intramolecular Friedel-Crafts reaction: access to dibenzoxepine-fused spirooxindoles. Org Biomol Chem 2021; 19:1760-1768. [PMID: 33538747 DOI: 10.1039/d0ob02461a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A facile, DAST-mediated intramolecular cyclization of 3-hydroxy-3-(2-((3-methoxybenzyl)oxy)phenyl)indolin-2-one derivatives for the synthesis of spirooxindoles fused with dibenzoxepine moieties is described. The success of this reaction is highly dependent on the choice of solvent (promoted by DCM and 1,2-DCE) and the electronic nature of the pendant aromatic ring, which is favored by the presence of electron-donating substituents. The reaction is believed to proceed through an intramolecular Friedel-Crafts-type reaction. Various dibenzoxepine-fused spirooxindoles were successfully synthesized in up to 98% yield. This methodology provides libraries of structurally diverse and medicinally important small molecules that could aid in the search for new bioactive molecules.
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Affiliation(s)
- Ramesh Samikannu
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India.
| | - Sankaranarayanan Sethuraman
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India.
| | - Nagaraja Akula
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India.
| | - Vignesh Radhakrishnan
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India.
| | - Srinivasarao Kamisetti
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India.
| | - Shabana Banu
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India.
| | - Muthalagu Vetrichelvan
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India.
| | - Anuradha Gupta
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India.
| | - Jianqing Li
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, 100 Binney St., Cambridge, MA 02142, USA
| | - Richard Rampulla
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, P.O. Box 5400, Princeton, New Jersey 08543-4000, USA
| | - Arvind Mathur
- Department of Discovery Synthesis, Biocon Bristol Myers Squibb R&D Centre, Syngene International Ltd., Biocon Park, Plot No. 2 & 3, Jigani Link Road, Bommasandra IV, Bangalore 560100, India. and Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, P.O. Box 5400, Princeton, New Jersey 08543-4000, USA
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24
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Epifanov M, Mo JY, Dubois R, Yu H, Sammis GM. One-Pot Deoxygenation and Substitution of Alcohols Mediated by Sulfuryl Fluoride. J Org Chem 2021; 86:3768-3777. [PMID: 33567820 DOI: 10.1021/acs.joc.0c02557] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Sulfuryl fluoride is a valuable reagent for the one-pot activation and derivatization of aliphatic alcohols, but the highly reactive alkyl fluorosulfate intermediates limit both the types of reactions that can be accessed as well as the scope. Herein, we report the SO2F2-mediated alcohol substitution and deoxygenation method that relies on the conversion of fluorosulfates to alkyl halide intermediates. This strategy allows the expansion of SO2F2-mediated one-pot processes to include radical reactions, where the alkyl halides can also be exploited in the one-pot deoxygenation of primary alcohols under mild conditions (52-95% yield). This strategy can also enhance the scope of substitutions to nucleophiles that are previously incompatible with one-pot SO2F2-mediated alcohol activation and enables substitution of primary and secondary alcohols in 54-95% yield. Chiral secondary alcohols undergo a highly stereospecific (90-98% ee) double nucleophilic displacement with an overall retention of configuration.
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Affiliation(s)
- Maxim Epifanov
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jia Yi Mo
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Rudy Dubois
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Hao Yu
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Glenn M Sammis
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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25
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Hirata G, Takeuchi K, Shimoharai Y, Sumimoto M, Kaizawa H, Nokami T, Koike T, Abe M, Shirakawa E, Nishikata T. Chemistry of Tertiary Carbon Center in the Formation of Congested C-O Ether Bonds. Angew Chem Int Ed Engl 2021; 60:4329-4334. [PMID: 33350568 DOI: 10.1002/anie.202010697] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/09/2020] [Indexed: 11/11/2022]
Abstract
Nucleophilic substitutions, including SN 1 and SN 2, are classical and reliable reactions, but a serious drawback is their intolerance for both bulky nucleophiles and chiral tertiary alkyl electrophiles for the synthesis of a chiral quaternary carbon center. An SRN 1 reaction via a radical species is another conventional method used to carry out substitution reactions of bulky nucleophiles and alkyl halides, but chiral tertiary alkyl electrophiles cannot be used. Therefore, a stereospecific nucleophilic substitution reaction using chiral tertiary alkyl electrophiles and bulky nucleophiles has not yet been well studied. In this paper, we describe the reaction of tertiary alkyl alcohols and non-chiral or chiral α-bromocarboxamides as a tertiary alkyl source for the formation of congested ether compounds possessing two different tertiary alkyl groups on the oxygen atom with stereoretention.
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Affiliation(s)
- Goki Hirata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Kentarou Takeuchi
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Yusuke Shimoharai
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Michinori Sumimoto
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Hazuki Kaizawa
- Department of Chemistry and Biotechnology, Graduate School of Engineering (Center for Research on Green Sustainable Chemistry, Faculty of Engineering), Tottori University, 4-101 Koyamachominami, Tottori city, Tottori, 680-8552, Japan
| | - Toshiki Nokami
- Department of Chemistry and Biotechnology, Graduate School of Engineering (Center for Research on Green Sustainable Chemistry, Faculty of Engineering), Tottori University, 4-101 Koyamachominami, Tottori city, Tottori, 680-8552, Japan
| | - Takashi Koike
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
| | - Eiji Shirakawa
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo, 669-1337, Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
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26
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Gong Y, Zhu Z, Qian Q, Tong W, Gong H. Zn- and Cu-Catalyzed Coupling of Tertiary Alkyl Bromides and Oxalates to Forge Challenging C–O, C–S, and C–N Bonds. Org Lett 2021; 23:1005-1010. [DOI: 10.1021/acs.orglett.0c04206] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuxin Gong
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Zhaodong Zhu
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Qun Qian
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Weiqi Tong
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
| | - Hegui Gong
- Center for Supramolecular Chemistry and Catalysis, Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China
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27
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Coelho A, Machado-Rodrigues C, Behr JB, Vasse JL. Convergent Evolution of Diastereomeric Mixtures of 5-Methoxy-pentylzirconocenes toward Trans-1,2-substituted Cyclopentanes. Org Lett 2021; 23:772-776. [PMID: 33439667 DOI: 10.1021/acs.orglett.0c03998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The access to 1,2- and 1,1,2-substituted trans cyclopentanes via a sequential hydrozirconation/TMSOTf-mediated cyclization applied to 5-methoxypent-1-enes is presented. Involving a transient carbocation, the reaction was shown to be diastereo-convergent. Possibly performed in a nonracemic version, the reaction proved compatible with a range of functional groups affording a large panel of cyclopentanes.
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Affiliation(s)
- Aurélien Coelho
- Institut de Chimie Moléculaire de Reims-CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France
| | - Carine Machado-Rodrigues
- Institut de Chimie Moléculaire de Reims-CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France
| | - Jean-Bernard Behr
- Institut de Chimie Moléculaire de Reims-CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France
| | - Jean-Luc Vasse
- Institut de Chimie Moléculaire de Reims-CNRS (UMR 7312) and Université de Reims Champagne Ardenne, 51687 Reims Cedex 2, France
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28
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Chanda R, Kar A, Das A, Chakraborty B, Jana U. Iron-catalyzed carboarylation of alkynes via activation of π-activated alcohols: rapid synthesis of substituted benzofused six-membered heterocycles. Org Biomol Chem 2021; 19:5155-5160. [PMID: 34037047 DOI: 10.1039/d1ob00488c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An Fe(OTf)3-catalysed carboarylation of alkynes is reported for the straightforward synthesis of densely substituted 1,2-dihydroquinolines from N-propargyl anilides and π-activated alcohols. The reaction provides a new method for the synthesis of highly substituted benzofused six-membered heterocycles by the formation of two carbon-carbon bonds and one ring in a single step. The power of the methodology was further extended to the synthesis of substituted chromene and thiochromene derivatives in high yields. In addition, substituted quinoline derivatives were also achieved in a single step in the presence of FeCl3 through detosylation/aromatisation. A number of control experiments have been performed and a plausible mechanism has also been proposed to explain the formation of the products.
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Affiliation(s)
- Rupsa Chanda
- Department of Chemistry, Jadavpur University, Kolkata 700032, West Bengal, India.
| | - Abhishek Kar
- Department of Chemistry, Jadavpur University, Kolkata 700032, West Bengal, India.
| | - Aniruddha Das
- Department of Chemistry, Jadavpur University, Kolkata 700032, West Bengal, India.
| | - Baitan Chakraborty
- Department of Chemistry, Jadavpur University, Kolkata 700032, West Bengal, India.
| | - Umasish Jana
- Department of Chemistry, Jadavpur University, Kolkata 700032, West Bengal, India.
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Maikhuri VK, Prasad AK, Jha A, Srivastava S. Recent advances in the transition metal catalyzed synthesis of quinoxalines: a review. NEW J CHEM 2021. [DOI: 10.1039/d1nj01442k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This review summarizes the recent developments in the synthesis of a variety of substituted quinoxalines using transition metal catalysts.
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Affiliation(s)
- Vipin K. Maikhuri
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Ashok K. Prasad
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - Amitabh Jha
- Department of Chemistry
- Acadia University
- Wolfville
- Canada
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30
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Margarita C, Villo P, Tuñon H, Dalla-Santa O, Camaj D, Carlsson R, Lill M, Ramström A, Lundberg H. Zirconium-catalysed direct substitution of alcohols: enhancing the selectivity by kinetic analysis. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01219c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Kinetic analysis was used as a tool for rational optimization of catalytic direct substitution of alcohols to enable selective formation of ethers, thioethers, and Friedel–Crafts alkylation products using a moisture-tolerant and commercially available Zr complex.
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Affiliation(s)
- Cristiana Margarita
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Piret Villo
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Hernando Tuñon
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Oscar Dalla-Santa
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - David Camaj
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Robin Carlsson
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Malin Lill
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Anja Ramström
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Helena Lundberg
- Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
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31
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Hirata G, Takeuchi K, Shimoharai Y, Sumimoto M, Kaizawa H, Nokami T, Koike T, Abe M, Shirakawa E, Nishikata T. Chemistry of Tertiary Carbon Center in the Formation of Congested C−O Ether Bonds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010697] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Goki Hirata
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Kentarou Takeuchi
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Yusuke Shimoharai
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Michinori Sumimoto
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Hazuki Kaizawa
- Department of Chemistry and Biotechnology Graduate School of Engineering (Center for Research on Green Sustainable Chemistry, Faculty of Engineering) Tottori University 4-101 Koyamachominami, Tottori city Tottori 680-8552 Japan
| | - Toshiki Nokami
- Department of Chemistry and Biotechnology Graduate School of Engineering (Center for Research on Green Sustainable Chemistry, Faculty of Engineering) Tottori University 4-101 Koyamachominami, Tottori city Tottori 680-8552 Japan
| | - Takashi Koike
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology, R1-27 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226–8503 Japan
| | - Manabu Abe
- Department of Chemistry Graduate School of Science Hiroshima University, Higashi-Hiroshima Hiroshima 739-8526 Japan
| | - Eiji Shirakawa
- Department of Applied Chemistry for Environment School of Science and Technology Kwansei Gakuin University Sanda Hyogo 669-1337 Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
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32
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Khusnutdinov RI, Bayguzina AR. New advances in the catalysis of organic reactions by iron compounds. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4943] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The review summarizes and systematizes the literature data on a new promising application area of iron compounds, that is, catalysis of organic reactions. The considered reactions include halogenation, formation of C−C bonds with the participation of various substrates, new methods for the synthesis of ethers and aromatic and heteroaromatic carboxylic acid esters, N-alkylation of aliphatic and aromatic amines and amidation of olefins and cyclopropane-containing hydrocarbons. The advances in the synthesis of quinolines and unusual cyclization reactions catalyzed by iron complexes are described.
The bibliography includes 144 references.
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33
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Lanke V, Marek I. Stereospecific nucleophilic substitution at tertiary and quaternary stereocentres. Chem Sci 2020; 11:9378-9385. [PMID: 34094203 PMCID: PMC8161537 DOI: 10.1039/d0sc02562c] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Nucleophilic substitution reactions have always been considered as one of the most powerful reactions for the creation of carbon-carbon or carbon-heteroatom bonds in organic synthesis. In contrast to secondary carbons, the steric shielding of tertiary carbons retards a concerted, stereospecific nucleophilic substitution, and ionizing pathways often lead to nonselective substitution due to ion pair dissociation. In this minireview, we will detail pioneering contributions and more recent achievements emphasizing the feasibility of nucleophilic substitution on tertiary stereocentres under certain conditions, with inversion of configuration. The development of these transformations at tertiary centres are of remarkable added value to practitioners in the field of complex molecule synthesis. A stereoselective substitution at a quaternary carbon stereocentre with inversion of configuration is also discussed in the case of a three-membered ring.
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Affiliation(s)
- Veeranjaneyulu Lanke
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Technion City 3200009 Haifa Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Technion City 3200009 Haifa Israel
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Wang Y, Chen B, He X, Gui J. Bioinspired Synthesis of Nortriterpenoid Propindilactone G. J Am Chem Soc 2020; 142:5007-5012. [DOI: 10.1021/jacs.0c00363] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yu Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Bo Chen
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xubiao He
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jinghan Gui
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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35
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Fu S, Liu B. Recent progress in the synthesis of limonoids and limonoid-like natural products. Org Chem Front 2020. [DOI: 10.1039/d0qo00203h] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Recent progress in syntheses of limonoids and limonoid-like natural products is reviewed. The current “state-of-art” advance on novel synthetic strategy are summarized and future outlook will be presented.
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Affiliation(s)
- Shaomin Fu
- Key Laboratory of Green Chemistry &Technology of the Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Bo Liu
- Key Laboratory of Green Chemistry &Technology of the Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
- China
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36
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Akkarasamiyo S, Samec JSM. Intermolecular Stereospecific Substitution of Underivatized Enantioenriched Secondary Alcohols by Organocatalysis. Angew Chem Int Ed Engl 2019; 58:17908-17910. [DOI: 10.1002/anie.201911532] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Sunisa Akkarasamiyo
- Laboratory of Medicinal ChemistryChulabhorn Research Institute 54 Kamphaeng Phet 6 Road, Laksi Bangkok 10210 Thailand
| | - Joseph S. M. Samec
- Department of Organic ChemistryStockholm University, Arrheniuslaboratorierna 10691 Stockholm Sweden
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37
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Huy PH. Lewis Base Catalysis Promoted Nucleophilic Substitutions – Recent Advances and Future Directions. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901495] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Peter H. Huy
- Institute for Organic Chemistry Saarland University P. O. Box 151150 66041 Saarbruecken Germany
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38
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Akkarasamiyo S, Samec JSM. Intermolekulare stereospezifische Substitution von underivatisierten enantiomerenangereicherten sekundären Alkoholen durch Organokatalyse. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sunisa Akkarasamiyo
- Laboratory of Medicinal ChemistryChulabhorn Research Institute 54 Kamphaeng Phet 6 Road, Laksi Bangkok 10210 Thailand
| | - Joseph S. M. Samec
- Department of Organic ChemistryStockholm University, Arrheniuslaboratorierna 10691 Stockholm Schweden
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39
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Chanda R, Chakraborty B, Rana G, Jana U. Iron-Catalyzed Functionalization of 3-Benzylideneindoline Through Tandem Csp2
-Csp3
Bond Formation/Isomerization with π-Activated Alcohols. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rupsa Chanda
- Department of Chemistry; Jadavpur University; 700032 Kolkata West Bengal India
| | - Baitan Chakraborty
- Department of Chemistry; Jadavpur University; 700032 Kolkata West Bengal India
| | - Gopal Rana
- Department of Chemistry; Jadavpur University; 700032 Kolkata West Bengal India
| | - Umasish Jana
- Department of Chemistry; Jadavpur University; 700032 Kolkata West Bengal India
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